如果我在Visual Studio 2010 SP1中创建一个新项目,并选择“WPF应用程序”,并尝试构建生成的应用程序,我会得到错误
名称“InitializeComponent”在当前上下文中不存在。
今天早上,当我试图构建当前项目时,我遇到了类似的错误。昨天,我编译和运行它没有问题。
我创建了一个新项目,每当我编译项目时,都会得到错误。我刚刚把项目发给了同事,他刚刚编译完成,没有任何错误。
怎么了?
如果我在Visual Studio 2010 SP1中创建一个新项目,并选择“WPF应用程序”,并尝试构建生成的应用程序,我会得到错误
名称“InitializeComponent”在当前上下文中不存在。
今天早上,当我试图构建当前项目时,我遇到了类似的错误。昨天,我编译和运行它没有问题。
我创建了一个新项目,每当我编译项目时,都会得到错误。我刚刚把项目发给了同事,他刚刚编译完成,没有任何错误。
怎么了?
当前回答
导致这个错误的另一个常见原因是:
Right click on folder in project to create new UserControl. This creates a class and xaml file that derives from user control in the namespace of the folder. Then you decide to change the namespace of the class because you're really just using folders for organization of code. The x:Class attribute will not get automatically updated so it will be searching for a class that doesn't exist. Could probably use a better error message like "x:Class type could not be found in namesace bla.blaa.blaaa."
其他回答
导致这个错误的另一个常见原因是:
Right click on folder in project to create new UserControl. This creates a class and xaml file that derives from user control in the namespace of the folder. Then you decide to change the namespace of the class because you're really just using folders for organization of code. The x:Class attribute will not get automatically updated so it will be searching for a class that doesn't exist. Could probably use a better error message like "x:Class type could not be found in namesace bla.blaa.blaaa."
当我试图构建一个针对net48的SDK项目时,这种情况发生在我身上。它与MSBuild.exe一起工作很好,但dotnet构建失败与给定的错误。
对我有用的是
在<PropertyGroup/>节点中添加<UseWPF>true</UseWPF> 删除所有<Page />元素,因为它们现在已被自动包含。
现在msbuild和dotnet都可以构建了。
以下是完整的项目文件:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{07465991-AC74-4C22-B1DE-7BA67A040631}</ProjectGuid>
<OutputType>library</OutputType>
<RootNamespace>MyRootNamespace</RootNamespace>
<AssemblyName>MyAssemblyName</AssemblyName>
<FileAlignment>512</FileAlignment>
<PackagesDirectory>$(UserProfile)\.nuget\packages</PackagesDirectory>
<ResolveNuGetPackages>true</ResolveNuGetPackages>
<SkipValidatePackageReferences>true</SkipValidatePackageReferences>
<TargetFramework>net48</TargetFramework>
<TargetFrameworkProfile />
<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
<IsNetCoreProject>false</IsNetCoreProject>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">15.0</VisualStudioVersion>
<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
<AutoGenerateBindingRedirect>true</AutoGenerateBindingRedirect>
<ResolveAssemblyReferencesSilent>true</ResolveAssemblyReferencesSilent>
<AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
<UseWPF>true</UseWPF>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>embedded</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>embedded</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Data" />
<Reference Include="System.Drawing" />
<Reference Include="System.Xml" />
<Reference Include="Microsoft.CSharp" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="System.Net.Http" />
<Reference Include="System.Xaml" />
<Reference Include="WindowsBase" />
<Reference Include="PresentationCore" />
<Reference Include="PresentationFramework" />
</ItemGroup>
</Project>
这发生在我身上,因为一个Nuget包卸载程序吹走了App.xaml中<Application>元素上的所有属性。这包括x:Class属性,它指定应用程序类名。因此从未生成包含InitializeComponent()方法的分部类。
我通过将App.xaml恢复到源控制副本来解决这个问题。
我遇到过这种情况(尽管这在很大程度上是我的错,是在我复制并粘贴了一些代码之后造成的);当命名空间在XAML和后面的代码之间不匹配时,就会发生这种情况
EG
<UserControl x:Class="DockPanel.TreeView" />
后面的代码是
namespace NotDockPanel
我也有同样的问题,我必须把我的共享项目转换成一个可移植的类库。